Ionic v4在物理设备中提供空白屏幕

Question

版本：

离子型4，类型=角型，cordova v7。0

当我试图运行命令：离子科尔多瓦运行Android我的应用程序运行模拟器完美（设备版本7.1 API 25），但当我试图安装应用程序到我的物理设备版本4.4.2（API 19）我看到空白屏幕。

在我的配置中。xml文件我看到：

<engine name="android" spec="^6.2.3" />

我能做什么呢？

其他详细信息从调试与Android Studio：

02/22 13:30:32: Launching android
No apk changes detected since last installation, skipping installation of C:\Ionic\testApp\platforms\android\build\outputs\apk\android-debug.apk
$ adb shell am force-stop io.ionic.starter
$ adb shell am start -n "io.ionic.starter/io.ionic.starter.MainActivity" -a android.intent.action.MAIN -c android.intent.category.LAUNCHER -D
Connecting to io.ionic.starter
Capturing and displaying logcat messages from application. This behavior can be disabled in the "Logcat output" section of the "Debugger" settings page.
V/Provider/Settings: get setting for user 0 by user 0 so skipping cache
    invalidate [system]: current 297 != cached 0
D/ActivityThread: hoder:android.app.IActivityManager$ContentProviderHolder@42ed8968,provider,holder.Provider:android.content.ContentProviderProxy@42ed90e0
V/Provider/Settings: from db cache, name = anr_debugging_mechanism , value = 1
D/asset: AssetManager-->addDefaultAssets CIP path not exsit!
W/ActivityThread: Application io.ionic.starter is waiting for the debugger on port 8100...
I/System.out: Sending WAIT chunk
I/dalvikvm: Debugger is active
A/libc: Fatal signal 11 (SIGSEGV) at 0x0000000a (code=1), thread 18688 (o.ionic.starter)

Answer 1

尝试在polyfills中启用这些导入。ts：

import 'core-js/es6/symbol';
import 'core-js/es6/object';
import 'core-js/es6/function';
import 'core-js/es6/parse-int';
import 'core-js/es6/parse-float';
import 'core-js/es6/number';
import 'core-js/es6/math';
import 'core-js/es6/string';
import 'core-js/es6/date';
import 'core-js/es6/array';
import 'core-js/es6/regexp';
import 'core-js/es6/map';
import 'core-js/es6/weak-map';
import 'core-js/es6/set';

为我工作：）